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The different lives of galaxies at different environment density levels

Published online by Cambridge University Press:  12 October 2016

Antti Tamm ,
Lauri Juhan Liivamägi  and
Elmo Tempel
Antti Tamm
Affiliation:
Tartu Observatory, Tõravere, 61602 Tartumaa, Estonia email: [email protected]
Lauri Juhan Liivamägi
Affiliation:
Tartu Observatory, Tõravere, 61602 Tartumaa, Estonia email: [email protected]
Elmo Tempel
Affiliation:
Tartu Observatory, Tõravere, 61602 Tartumaa, Estonia email: [email protected] National Institute of Chemical Physics and Biophysics, Rävala pst 10, 10143, Tallinn, Estonia
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Abstract

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We take a closer look at the dependence of the galactic colour histogram on the environment density using a volume-limited sample of SDSS galaxies. We find that the strongest changes with environment are taking place with spiral galaxies. In dense environment, discs become considerably redder, apparently due to the shortage of gas, and less concentrated. Contrary to expectation, the mean Sérsic index of luminous elliptical galaxies decreases in denser environments.

Keywords

galaxies: photometry – galaxies: structure – galaxies: spiral – galaxies: elliptical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 408 - 411
Copyright
Copyright © International Astronomical Union 2016 

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